haplologyPronunciation: /hapˈlɒlədʒi/Definition of haplology noun the omission of one occurrence of a sound or syllable which is repeated within a word (e.g. in February pronounced as /ˈfɛbri)/. Origin: late 19th century: from Greek haploos 'single' + -logyhaplology in other Oxford dictionaries Definition of haplology in the US English dictionary